2039561908494 has 128 divisors (see below), whose sum is σ = 4505790136320. Its totient is φ = 610349625600.

The previous prime is 2039561908493. The next prime is 2039561908519. The reversal of 2039561908494 is 4948091659302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2039561908493) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2986181077 + ... + 2986181759.

It is an arithmetic number, because the mean of its divisors is an integer number (35201485440).

Almost surely, 2^{2039561908494} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2039561908494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2252895068160).

2039561908494 is an abundant number, since it is smaller than the sum of its proper divisors (2466228227826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2039561908494 is a wasteful number, since it uses less digits than its factorization.

2039561908494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006.

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 2039561908494 in words is "two trillion, thirty-nine billion, five hundred sixty-one million, nine hundred eight thousand, four hundred ninety-four".